Ssh access
SSH (Secure SHell) is the name of a protocol that is used to access remote machines securely over a network. If the appropriate permissions are available it allows the full use and configuration of the server.
In addition to connecting to other machines, SSH allows us to securely copy data (either single files or simulate encrypted FTP sessions), manage RSA keys to not write passwords when connecting to machines, and pass data from any other application over a channel securely tunneled via SSH.